Denmark's Crown Prince Frederik (R) laughs as he speaks with Australian Prime Minister Tony Abbott at an official function in Sydney October 26, 2013. Crown Prince Frederik and his wife Crown Princess... more&nbsp

Denmark's Crown Prince Frederik (R) laughs as he speaks with Australian Prime Minister Tony Abbott at an official function in Sydney October 26, 2013. Crown Prince Frederik and his wife Crown Princess Mary are on an official five-day visit to Australia. REUTERS/Brendon Thorne/Pool (AUSTRALIA - Tags: ROYALS ENTERTAINMENT POLITICS) less&nbsp